A dsm automatic comparison system based on aerial photography measurement

An automatic comparison and aerial photo technology, applied in the field of aerial photography measurement, can solve the problems of low efficiency, high orthophoto image quality requirements, and many omissions, so as to improve comparison efficiency, improve efficiency and comparison accuracy, and improve accuracy rate effect
CN111401345BActive Publication Date: 2020-08-28常州市新翼空间信息科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
常州市新翼空间信息科技有限公司
Publication Date
2020-08-28

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Abstract

The invention discloses a DSM automatic comparison system based on aerial photography measurement, which belongs to the technical field of aerial photography measurement. The elevation data of the two-phase aerial photos processed by the image processing module is extracted, the elevation conversion module is used to convert the elevation data of the two-phase aerial photos extracted by the elevation extraction module into a vector layer, and the layer overlay module is used for the two-phase aerial photos The vector layer of the photo is superimposed, and the comparison and labeling module is used to mark the area that has changed in the vector layer of the two-phase aerial photo. The time and manpower input for the comparison can more accurately detect the existence of illegal buildings. The comparison is more pertinent, and the effect of buildings with different areas can be screened by adjusting the value of each value.
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Description

technical field

[0001] The invention relates to the technical field of aerial photography measurement, in particular to a DSM automatic comparison system based on aerial photography measurement. Background technique

[0002] Aerial measurement refers to the use of drones and aerial cameras to take aerial photos of a certain area, and to make statistics and understand the buildings in the area through the aerial photos, and to compare the aerial photos with the corresponding aerial photos of the area in the past By comparison, you can confirm the illegal buildings in the area, and you can clearly understand whether there is any illegal use of national land;

[0003] At present, the inspection and comparison mainly uses the orthophoto aerial photos of two phases to detect illegal construction and other behaviors through manual identification. Due to the limitations of manual identification, the results of the inspection and comparison have the following shortcomings:

[0004] ...

Claims

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